Wood heel slotting machine



y 7, 1938. A. ROGGE I 2,117,769

{ woon HEEL 'SLOTTING MACHINE Filed May -23, 1936 I Azberi C-Foyye 5% ynQW M Patented May 17, 1938 UNITED STATES PATENT OFFlCE Albert C. Rcgge,Columbus, Ohio, assignor to Perma Corporation, Chicago, 111., acorporation of Illinois Application May 23, 1936, Serial No. 81,479

9 Claims.

This invention relates to an improved machine for slotting wood heels sothat the latter will be adapted for the reception of mechanicalfastening devices employed in uniting such heels in secured relationshipwith the heel seats of associated shoes.

In lieu of nailing wood heels to shoe bodies, it has been proposed tosecure metallic attaching plates to the heel seats of shoe outsoles, andto provide these plates with spaced depending cars, which are receivablewithin slots provided in the bodies of such heels, transverse lockingpins being provided which pass transversely through the heel bodies andthe ears of the attaching plates positioned therein, whereby to providea secure and effective fastening means for permanently and securelyretaining wood heels in connection with their cooperative heel seats.

It is a primary object of the present invention to provide an improvedmachine for slotting wood heels in an accurate, economical andexpeditious manner in order that such slots may receive and will beproperly aligned with the securing ears of the metallic attachingplates.

A further object resides in the provision of gage means of an adjustablecharacter by which heels of different size may be properly registeredwith the slot producing cutters of the machine so that slots of properspacing and depth may be quickly and readily produced.

For a further understanding of the invention, reference is to be had tothe following description and the accompanying drawing, wherein:

Fig. 1 is a top plan view of a wood heel slotting machine formed inaccordance with the present invention;

Fig. 2 is a vertical transverse sectional view taken through the machineon the plane indicated by the line II-II of Fig. 1;

Fig. 3 is a vertical longitudinal sectional view taken through themachine on the plane disclosed by the line IIIIII of Fig. 2;

Fig. 4 is a perspective view of a wood shoe heel slotted in accordancewith the present invention.

Fig. 5 is a perspective view of a slidable clamping plate used inconnection with the machine.

Referring more particularly to the drawing, the numeral I designates achannel shaped supporting frame to the outer vertical surface of whichis secured by means of bolts 2 a bearing block 3. This block carries across pin 4, the ends of which, as shown in Fig. 3, project beyond thevertical sides of the block. To these outwardly projecting ends aresecured the upper ends of coil springs 5, the latter having their lowerends secured to pins 6 which are carried by a hollow heel receiving andsupporting frame 1. One of the inner vertical walls 8 of said frame isformed with vertically extending dovetail guides 9 which are receivablewithin correspondingly formed slots or recesses l0 provided in the frameI, the said guides providing for vertical movement of the heel receivingand supporting frame 7 with respect to the channel member I against theresistance exercised by the springs 5 when the frame I is advanced in adownward direction. When pressure is released, the springs serve toreturn the frame to its normal position.

Carried in connection with the channel member I is an electric motor II,the armature shaft [2 of which extends, as shown in Fig. 3, through aslot l3 formed in one of the side walls of the frame or casing l. Theouter end of the shaft l2 removably carries for rotation therewith apair of circular slotting cutters or saws M and the hub l5 of thesecutters or saws rests for rotation in a trough l6 provided in the upperend of the bearing block 3. The latter is vertically slotted as at I! toreceive a spring pressed lubricating wick l8, normally in contact withthe cutter hub iii.

The top wall ill of the frame or casing l is formed with a rectangularopening 29, and at the forward end of this opening, the top I9 isequipped with a transversely extending gage bar 2|. This bar is providedat its ends with slots for the reception of screws 22 carrying wing nuts23. The top i9 is provided with graduations for different heel sizes inorder to effect accurate registration of the heels to be slotted withthe cutters [4.

A wood heel 25, of the type disclosed in Fig. 3, is placed upside downon the top wall IS, with the breast edges or surfaces 26 of the heel inengagement with the gage bar 2 I. In addition, the heel is clamped inthis position by the provision of a sliding plate 21 mounted formovement in a horizontal plane on the top [9 by having its ends arrangedin parallel longitudinally extending guides 28. The plate 21 is providedwith an angle member 29, which acts as a finger rest for the machineoperator. Forwardly, the plate 2'! includes a substantially V-shapedrecess 30 of sufficient width to accommodate various sized heels. Asshown in Fig. 5, the opposite edges of the recess 30 may be covered withan adhesive fabric so that when the plate is advanced into grippingengagement with an associated heel, it will not mar or injure the same.

In the operation of the machine, the gage bar 2| is first adjusted inrelation to the graduations 2 3 in order to establish the properrelationship between the breast line 26 of the heel and the cutters M,so that the vertical slots 3!, produced in the upper surface of theheel, will be disposed in properly spaced relationship from the breastof the heel and, moreover, to insure the locating of the slots 35 sothat they will properly receive the keeper ears of a metallic heelattaching plate provided on the sole of a shoe. Such a heel attachingplate has been disclosed in the patent to Eichhorn, No. 2,023,671,granted December 10, 1935. With the heel assuming the dotted lineposition disclosed in Fig. 3, the sliding plate 21 is advanced so thatthe V-shaped edges of the recesses 33 will grip the rounded back of theheel. The sliding of the plate is usually effected by the thumb of theoperators hand with the fingers resting on the top of the heel body.After the plate has been brought into clamping engagement with the heel,the operator applies downward pressure to the heel and to the top of theframe or casings I. This causes the lowering of the frame and the heelmounted thereon so that the heel body will be brought into con tact withthe rapidly revolving cutters or saws M, thereby producing the slots 3!within the heel. The depth of the slots is regulated by the engagementof the heel surface with the cutter hub E5. After the out has beencompleted to the required depth, the operator merely releases pressureon the frame or casing l and the latter responds to the action of thesprings 5 and returns to its normal position. The slitting operation maybe quickly performed and slots produced in the heel bodies which willbear accurate relationship with the breast line of the heel. Thisaccuracy in manufacture enables the heels to be readily assembled withshoe carried fastening devices to which the heels are ultimatelyattached What is claimed is:

1. A wood heel slotting machine comprising a frame, a drive shaftsupported for rotation in connection with said frame and occupying anunchanging position with respect thereto, spaced cutters mounted forrotation in connection with said shaft, a heel supporting table,longitudinally extending guides formed with said frame on which saidtable is mounted for sliding movement at right angles to the axis ofrotation of said cutters, spring means normally serving to maintain saidtable in spaced relation from said cut ters, an adjustable gage barcarried by said table, and movable clamping means for maintaining thebreast edge of a wood heel supported on said table in contact with saidgage bar.

2. A machine for producing spaced slots in the seating surface of woodheels comprising a stationary frame, spaced cutters mounted for rotationon said frame, a heel support having an opening formed therein inregistration with said cutters, means for removably clamping a wood heelon said support with the seating surface of the heel disposed inregistration with said opening and said cutters, adjustable gage meansfor controlling the operative positions of a wood heel on said supportin relation to said cutters, and means for resisting movement of saidsupport toward said cutters.

3. A machine for producing spaced slots in the seating surface of woodheels for shoes comprising a stationary frame, a power driven shaftjournaled in connection with said frame, spaced slot producing cuttersmounted for rotation with said shaft in predetermined positions ofoperation, a heel support, vertical guides carried by said frame inwhich said support is confined for linear travel in a predeterminedpath, spring means cooperative with said support and resisting movementthereof from a normal position, and gage and clamping means carried bysaid support for maintaining a wood heel in a predetermined positionthereon.

4. Apparatus for slotting wood heels for shoe. comprising: a stationaryframe, an electrical motor mounted on said frame, spaced circularcutters carried by the outer end of the shaft of said motor, astationary bearing projecting from said frame and sustaining said shaftbetween said cutters, vertical guides carried by said frame, a heelsupport mounted for movement vertically Within said guides and relativeto said cutters, an adjustable gage bar carried by said support forcontact with the breast edges of a wood heel occupying an invertedposition on said support, and slidable clamping means carried by saidsupport for confining a wood heel in a predetermined position on saidsupport.

5. Apparatus for slotting wood heels for shoes comprising: a stationaryframe, an electrical motor mounted on said frame, spaced circularcutters carried by the outer end of the shaft of said motor, astationary bearing projecting from said frame and sustaining said shaftbetween said cutters, vertical guides carried by said frame, a heelsupport mounted for movement vertically within said guides and relativeto said cutters, an adjustable gage bar carried by said support forcontact with the breast edges of a wood heel occupying an invertedposition on said support, slidable clamping means carried by saidsupport for confining a wood heel in a predetermined position on saidsupport, and resilient means for resisting movement of said support fromits normal position.

6. A machine for producing a transverse slot in the seating surface ofwood heels for shoes comprising a stationary frame, a power driven shaftrotatably supported by said frame, a cutter secured to said shaft forrotation therewith, a heel support mounted on said frame for slidingmovement in a direction angular to the axis of said shaft, a gage barsecured to said heel support, said gage bar being adjustable toward andaway from the plane in which said cutter is arranged, and means carriedby said heel support for clamping an inverted heel in position with thebreast edges of the heel in engagement with said gage bar.

'7. A machine for producing a transverse slot in the seating surface ofwood heels comprising a stationary frame, a power driven shaft rotatablycarried by said frame, a cutter secured to said shaft for rotationtherewith, a heel support mounted on said frame and movable toward andaway from said cutter in a direction perpendicular to the axis of saidshaft, a gage bar secured to said support and extending transversely ofsaid shaft, and heel clamping means mounted on said support for movementtoward and away from said gage bar, said clamping means including aplate provided with a V-shaped notch having under-cut edges.

8. A machine for producing a transverse slot in the seating surface ofwood heels comprising a stationary frame, a power driven shaft rotatablycarried by said frame, a cutter securedto said shaft for rotationtherewith, a heel support mounted on said frame for movement toward andaway from said cutter in a direction perpendicular to the axis of saidshaft, a gage bar secured to said support, said bar being arranged atright angles to said shaft, heel clamping means mounted on said supportfor movement toward and away from said gage bar, said clamping meansincluding a plate provided with a V- shaped notch having under-cutedges, and resilient gripping means secured to the edges of said notch.

9. A machine for producing spaced slots in the seating surface of woodheels for shoes comprising a stationary frame, a power driven shaftrotatably carried by said frame, spaced cutters secured to said shaftfor rotation therewith, a heel support carried by said frame formovement in a direction perpendicular to said shaft, a gage bar providedon said support, said gage bar being engaged by a heel positioned onsaid support, and a plate mounted on said support for movement towardand away from said gage bar, said plate being provided with a V-shapednotch to engage the back of said heel and properly locate the heel 10

